Building a cinder block wall.
I need to build a cinder block wall on my backyard, to block the sites of the opposite neighbors sheds. This wall will need to be 17 cinder blocks wide, and 10 stocked in height. The backyard is concrete, but is not level. Can someone lead me to the right directions. I am pretty handy and would like to tackle this spring. I guess the hardest part would be setting the footings. Can I install on top of the concrete? Do I have to cut the concrete and lay the footings below ground level? What size of rebar is needed, and where? All the help is Greatly appreciated. Thanks